What others said. With that hardware you are looking at very competitive pricing from MS. I don't think you can that form factor and specs any cheaper?
That said, I'm not getting Surface 2 Pro. So lets try to list other similar options.
Cheapest model only carries Pentium processor, not Core Haswell. Thinnest and imo sexiest looking Haswell tablet out there. There has been reports that the screen and keyboard wont stay together all that well when attached to each other.
Not a pure tablet as the Surface and Vaio Tap with its Yoga like form factor, but worth to mention because of that 2560 x 1440 screen and thin body, even if the screen isn't removable.